def test_center(self):
x = random.Random().randint(-1000, 1000)
y = random.Random().randint(-1000, 1000)
z = random.Random().randint(-1000, 1000)
obj = Mobject()
obj.points = np.array([[x, y, z]])
obj.center()
np.testing.assert_array_equal(obj.points, np.zeros((1, 3)))
def test_center_returns_self(self):
obj = Mobject()
obj.points = np.zeros((1, obj.dim))
self.assertEqual(obj, obj.center())
